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193 km · Domestic

Washington Dulles (IAD) – John Murtha Johnstown Cambria County (JST)

In July 2026, 46 flights operated between Washington Dulles and John Murtha Johnstown Cambria County (both directions), and 78.3% left on time, according to the US BTS.

Official · July 2026 according to the US BTS only airlines required to report on-time data to the US DOT

Flights per month

Only complete months are shown. A month appears once the source has published every day of it.

The most recent periods19 periods
PeriodFlights operated 2025Flights operated 2026Change vs last year
January5855▼ 5.2%
February4656▲ 21.7%
March6254▼ 12.9%
April6042▼ 30.0%
May6244▼ 29.0%
June6042▼ 30.0%
July6246▼ 25.8%
August62––
September60––
October62–in progress
November60––
December54––
Year to date (Jan–Jul)410339▼ 17.3%

On-time departures by month

Departures within 15 minutes of schedule.

The most recent periods19 periods
PeriodOn-time departures 2025On-time departures 2026Change vs last year
January81.0%80.0%▼ 1.2%
February78.3%64.3%▼ 17.9%
March88.7%70.4%▼ 20.6%
April88.3%83.3%▼ 5.7%
May93.5%86.4%▼ 7.6%
June70.0%83.3%▲ 19.0%
July79.0%78.3%▼ 0.9%
August82.3%––
September88.3%––
October91.9%–in progress
November68.3%––
December59.3%––
Year-to-date average (Jan–Jul)82.7%78.0%▼ 5.7%

Cancelled flights by month

The most recent periods19 periods
PeriodCancelled flights 2025Cancelled flights 2026Change vs last year
January45▲ 25.0%
February100▼ 100.0%
March08–
April02–
May00–
June00–
July00–
August0––
September0––
October0–in progress
November0––
December8––
Year to date (Jan–Jul)1415▲ 7.1%

By direction

IAD → JST

Scheduled flights
623
Flights operated
603
Cancelled
20 · 3.2%
On-time departures
78.1%

JST → IAD

Scheduled flights
623
Flights operated
604
Cancelled
19 · 3.0%
On-time departures
81.6%

IAD → JST and JST → IAD counted separately.

Airlines on this route

Oct 1, 2024 – Jul 31, 2026
AirlineScheduled flights Share On-time departures Cancelled
SkyWest Airlines OO 1,246 100.0% 79.9% 39

Shares are of scheduled flights in the period shown. Codeshare flights are counted once, under the operating airline.

Flight timing & delays

Historical departures, grouped by the scheduled local time at the departure airport. These are recorded outcomes, not a forecast for your flight.

Times are local to the departure airport of each flight; both directions are combined.

US domestic sectors recorded by BTS

Source: the US BTS · Oct 12, 2024 → Jul 31, 2026

Lowest average delay12:00–13:0036.0min · 570 recorded · 550 measured
Gap to highest-delay hour1.8min12:00 ↔ 06:00
Recorded flights1,246IAD–JST

Departure hour

On-time departures Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · 81.4% · 560 recorded · 542 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 62 recorded · 61 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · 76.9% · 570 recorded · 550 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 53 recorded · 53 measured · Source: the US BTS 14:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 15:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 16:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 17:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Average departure delay Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · 37.8 min · 560 recorded · 542 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 09:00 · Fewer than 200 measured departures · 1 recorded · 1 measured · Source: the US BTS 10:00 · Fewer than 200 measured departures · 62 recorded · 61 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · 36.0 min · 570 recorded · 550 measured · Source: the US BTS 13:00 · Fewer than 200 measured departures · 53 recorded · 53 measured · Source: the US BTS 14:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 15:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 16:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 17:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
00:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 01:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 02:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 03:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 04:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 05:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 06:00 · 560 · 560 recorded · 542 measured · Source: the US BTS 07:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 08:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 09:00 · 1 · 1 recorded · 1 measured · Source: the US BTS 10:00 · 62 · 62 recorded · 61 measured · Source: the US BTS 11:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 12:00 · 570 · 570 recorded · 550 measured · Source: the US BTS 13:00 · 53 · 53 recorded · 53 measured · Source: the US BTS 14:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 15:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 16:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 17:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 18:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 19:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 20:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 21:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 22:00 · No observations · 0 recorded · 0 measured · Source: the US BTS 23:00 · No observations · 0 recorded · 0 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

View the figures
Departure hourOn-time departuresAverage departure delayWith departure timeRecorded flights
00:00No observations———
01:00No observations———
02:00No observations———
03:00No observations———
04:00No observations———
05:00No observations———
06:0081.4%37.8 min542560
07:00No observations———
08:00No observations———
09:00Fewer than 200 measured departures—11
10:00Fewer than 200 measured departures—6162
11:00No observations———
12:0076.9%36.0 min550570
13:00Fewer than 200 measured departures—5353
14:00No observations———
15:00No observations———
16:00No observations———
17:00No observations———
18:00No observations———
19:00No observations———
20:00No observations———
21:00No observations———
22:00No observations———
23:00No observations———

Day of week

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Monday · 188 · 188 recorded · 178 measured · Source: the US BTS Tuesday · 154 · 154 recorded · 152 measured · Source: the US BTS Wednesday · 188 · 188 recorded · 185 measured · Source: the US BTS Thursday · 186 · 186 recorded · 181 measured · Source: the US BTS Friday · 188 · 188 recorded · 183 measured · Source: the US BTS Saturday · 154 · 154 recorded · 153 measured · Source: the US BTS Sunday · 188 · 188 recorded · 175 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.

View the figures
Day of weekOn-time departuresAverage departure delayWith departure timeRecorded flights
MondayFewer than 200 measured departures—178188
TuesdayFewer than 200 measured departures—152154
WednesdayFewer than 200 measured departures—185188
ThursdayFewer than 200 measured departures—181186
FridayFewer than 200 measured departures—183188
SaturdayFewer than 200 measured departures—153154
SundayFewer than 200 measured departures—175188

Month of year

Months combine the same calendar month across the years shown; this is a seasonal pattern, not a monthly time series.

Recorded flights Partial coverage: only airlines that report on-time data to the US DOT
Jan · 122 · 122 recorded · 113 measured · Source: the US BTS Feb · 112 · 112 recorded · 102 measured · Source: the US BTS Mar · 124 · 124 recorded · 116 measured · Source: the US BTS Apr · 104 · 104 recorded · 102 measured · Source: the US BTS May · 106 · 106 recorded · 106 measured · Source: the US BTS Jun · 102 · 102 recorded · 102 measured · Source: the US BTS Jul · 108 · 108 recorded · 108 measured · Source: the US BTS Aug · 62 · 62 recorded · 62 measured · Source: the US BTS Sep · 60 · 60 recorded · 60 measured · Source: the US BTS Oct · 102 · 102 recorded · 102 measured · Source: the US BTS Nov · 120 · 120 recorded · 118 measured · Source: the US BTS Dec · 124 · 124 recorded · 116 measured · Source: the US BTS

Hover, tap or focus a point to see its value, sample and source.

No bucket in this view has 200 measured departures yet. Flight counts are shown; on-time and delay charts become available when the sample is large enough.

View the figures
Month of yearOn-time departuresAverage departure delayWith departure timeRecorded flights
JanFewer than 200 measured departures—113122
FebFewer than 200 measured departures—102112
MarFewer than 200 measured departures—116124
AprFewer than 200 measured departures—102104
MayFewer than 200 measured departures—106106
JunFewer than 200 measured departures—102102
JulFewer than 200 measured departures—108108
AugFewer than 200 measured departures—6262
SepFewer than 200 measured departures—6060
OctFewer than 200 measured departures—102102
NovFewer than 200 measured departures—118120
DecFewer than 200 measured departures—116124

Delay and on-time rates need at least 200 measured departures per bucket. Smaller samples remain visible in the flight-count chart. An empty slot means no observations, not zero flights.

Recorded outcomes

  • On time 77.4% 964
  • Delayed >15 min 19.5% 243
  • Cancelled 3.1% 39
  • Missing departure time 0.0% 0

All recorded flights with a known scheduled local time, counted once. Missing actual times are shown separately.

On time means departing no more than 15 minutes after schedule. Cancelled flights and flights missing departure times are excluded from the on-time rate and average delay.

Flight numbers on this route

10
10 of 10
Flight numbersBy direction DeparturesOn time
OO5046 JST → IAD 448 80.0%
OO5022 IAD → JST 275 74.9%
OO5046 IAD → JST 117 83.8%
OO5043 IAD → JST 108 79.1%
OO5047 IAD → JST 54 74.1%
OO5035 IAD → JST 37 78.1%
OO5076 JST → IAD 37 81.8%
OO5099 JST → IAD 37 86.5%
OO5062 JST → IAD 35 85.7%
OO5028 IAD → JST 32 87.5%

Flight numbers are the codes sold on tickets. On shared flights one aircraft can carry several of them. Only numbers with at least 30 flights have a page.

Monthly figures
PeriodFlights operated Change vs last yearCancelled On-time departures
July 2026 46 −25.8% 0 78.3%
June 2026 42 −30.0% 0 83.3%
May 2026 44 −29.0% 0 86.4%
April 2026 42 −30.0% 2 83.3%
March 2026 54 −12.9% 8 70.4%
February 2026 56 +21.7% 0 64.3%
January 2026 55 −5.2% 5 80.0%
December 2025 54 −12.9% 8 59.3%
November 2025 60 +3.4% 0 68.3%
October 2025 62 +55.0% 0 91.9%
September 2025 60 0 88.3%
August 2025 62 0 82.3%
July 2025 62 0 79.0%
June 2025 60 0 70.0%
May 2025 62 0 93.5%
April 2025 60 0 88.3%
March 2025 62 0 88.7%
February 2025 46 10 78.3%
January 2025 58 4 81.0%
December 2024 62 0 75.8%
November 2024 58 2 81.0%
October 2024 40 0 85.0%

How to read this chart

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